Automatic stopping device.



J. PAGANO.

AUTOMATIG STOHING DEVICE. APPLICATION FILED NOV. 17, 1913.

1,132,791 Patented Man 23, 1915.

H F 1;. F

JOSEPH PAGANO, 0F MEMPHIS, TENNESSEE.

AUTOMATIC STOPPING DEVICE.

Specification of Letters Patent.

Patented Mar. 23, 1915.

Application filed November 17, 1913. Serial No. 801,562.

To all whom it may concern:

Be it known that l, JOSEPH PAGANO, a resident of Memphis, Shelby county,Tennessee, have invented a new and useful Improvement in AutomaticStopping Devices, of which the following is a specification.

My invention relates to a device for short circuiting the sparkingcircuit and thereby automatically stopping a gasolene engine equippedwith a pump oiling'system when theoil in the crank-case becomes so low,or when the pump becomes so defective, as to prevent the further runningof the engine without an impairment of its efliciency and a probablebreak-down through improper lubrication. This is accomplished byproviding for automatically short circuiting' or grounding the currentto the sparking device, which in turn prevents the explosion of themixture in the'cylinders.

The objects of my invention are to prevent the cylinders from becomingtoo dry; to prevent the carbonization of cylinders through improperlubrication; and to give the operator of the machine immediate noticeoffimperfect lubrication,-by stopping his engine. I attain these objectsby the device illustrated in the accompanying drawings inwhich thefigure is a vertical sectional view of a stopping device made inaccordance with my invention.

A is a casting or chamber which screws into the walls of casting 13providing the chamber Z; both castings A and B may be made of anysuitable metal, but I prefer to have them cast of brass or aluminum. 1 Dis a cylindrical washer or partition made of a non-conductingcomposition, preferably fiber, and rests on the shoulder carried bycasting B as shown.

F, F are'brass contact screws bolted to the cylindrical partition orwasher '1), one

being placed on each side of the center as illustrated.

C is an oil float which moves freely upward and downward in chamber Thisfloat is connected by arod or stem E with a disk L, said disk mustbe ofsufficient dimensions to touch or cover both contact screws F F when inits lowest position, and must be made of some conducting metal,preferably copper.

J is a connection with the oil pipe nearest the pump, through which theoil passes beneath the piston float C and into the chamber Z; Prepresents the-connection between casting B andthe oil pipe leading tothe bearings of the engine.

0 is an aperture in the wall of the lower casting B through which theoil escapes into the chamber U, whence it passes through connection P tothe engine bearings.

The'short circuiting or grounding switch is of a triple contact typebeing provided with the contacts V and X, and the lever S.

, One of the contacts F carried by the disk D is connected by a wire Hto the contact V on the shortcircuiting switch; the lever S is connectedby wire Y to a magneto or other source of current supplying the ignitioncircuit, not shown; and the contact X is connected by the third wireshown to the crank case or other portion of the engine frame or to theground. A wire I leading from the other contact F on disk L is alsoconnected with the ground or to said engine frame. The wire Y and leverS being in the ignition circuit, and the contact X being connected tothe ground, as well as the contact V when the disk L connects thecontacts F F, it is evident that the wire Y will be grounded and theignition stopped when the lever S connects with contact X, and also whenit connects with contact V provided the disk L connects the contacts FF.

In engines equipped with pump devices, all oil may drain out of thechamber Z through hole Q, when the pump is not running. To start theengine, contacts F F are first cut out of the circuit by turning theswitch handle S to the neutral contact point XV. After the engine hasbeen spun sufficiently to get up circulation of oil through the pump andinto chamber Z, the contacts F F are then connected with the magneto orbatteries by turning the switch handle to contact point V. The oilisintroduced from the pump through the connection J, and as the oil risesin chamber Z it carries with it float C, which breaks the contactbetween disk L and the said contacts F F. The oil passing freely intothe chamber Z, passes out at 0, through chamber U, through passage P tothe parts to be lubricated. If the oil level is lowered beyond thesafety line,

.the float C lowers with the level, and finally at the danger pointmakes a contact between disk L and contact screws F F, which shortcircuits or grounds the current to the sparking device, and the engineautomatically. stops. If the pump becomes weak or defective, and doesnot throw enough oil to properly lubricate the'parts, the flow through.

passage J will be diminished, and hence a longer time will chamber Z.

.7 Q is a small drain holeithi'ough the wall of the casting B. By makingthis hole Q.

' smaller than the intake J, a short circuit of the ignition currentbecomesimpos'sible a's longas the pump'is doing efficient work.

When however, the pump becomes weak, there will be a smaller quantityofoil intro:

I duced into the chamber Z,so that which is pumped in Will drain outthrough hole Q v. causing the float to drop, the circuit shortcircuited', and the engine to automatically stop, as hereinbeforedescribed. g It obvious that those skilled in the art may vary thedetails of construction as Well as the arrangement of parts, Withoutdeparting from the spirit of my invention and therefore I do not wish tobe limited to the above disclosure, except as maybe required vby theclaims.

What I claim is; I i I 1. In a short circuiting device .fbr explosiveengines. having ignition circuits the 1 combination of a chamber for oilprovided with an inlet, ail-outlet,- and a drain opening into saidoutlet of a less capacity than said inlet; a float'in said chamber;contacts adapted to be controlled by said float; and

short circuiting connections. for. theignition circuit joined to saidcontacts, substahtially as described.

2. In a short circuiting device for explobe coiisumedin filling the'nections with 'sai iasap'ei siveengines having ignition circuits thecombination of a chamber provided with a float, an inlet, an outlet anda drain opening coacting with said float; a support withi in saidchamber provided with a pair of contacts; a ground connect ion for.- oneot said contacts; a connection bett'veen. the other'of said contacts andsaid ignition circuit; means carried by said float for joining saidcontacts and grounding said ignition circuit when said float reaches a.predetermined position; and means comprising a switch for breaking saidlast mentioned con-- motion and cutting out said contacts when 'itdesired to start the engine, substantially asdeseribed.) v

j 3. In a'short circuiting devicefor] engines having ignition; circuits,the'combination' of a chamber adapted to contain. the lubri catingoilfor the engine; an inlet for said oil adapted to. be connected With apump;-

